sundh



2 Shee1;s$het 1. A. SUNDI-I. ELEVATOR (No Model.)

INVENTDR:

WITNESSES:

J 2 Sheets-Sheet 2. A. SUNDH. ELEVATOR (No Model.)

Patented Feb. 10, 1891.

Fig. 2

WITNEEEEE:

AUGUST SUNDll, OF YONKERS, NEW YORK, ASSIGNOR OF ONE-HALF TO ERNESTBOENING, OF SAME PLACE.

ELEVATOR.

SPECIFICATION forming part Of Letters Patent N0. 446,397, dated February10, 1891.

' Application filed March 28, 1890. Serial No. 345,675- (No model.)

To all whom it may concern:

Be it known that 1, AUGUST SUNDH, a citizen of Sweden, and a resident ofYonkers, in the county of Westchester and State of New York, haveinvented new and useful Improvements in Elevators, of which thefollowing is a specification.

My invention relates to passenger-elevators for dwelling-houses; and itconsists, first, in improved means for working the controlling valve-rodby the operator in hydraulic elevators in the car; also, for working therod with facility by a person on any one of the floors of the building,as well as in the car, for greater convenience in buildings not having aspecial conductor for the car.

It consists, second, of an automatic locking device to insure theretention of the car at the door of the elevator-way until the door isclosed, all hereinafter fully described, reference being made to theaccompanying drawings, in Which- Figure 1 is a sectional elevation of anelevator-way, car, and parts of several floors of a building,illustrating my invention, the section being taken on the line a: so,Figs. 2 and 3, with a part broken out on lines y, Fig. 2. Fig. 2 is asectional elevation of part of the same on line .2 .2, Fig. 1, on anenlarged scale. Fig. 3 is a horizontal section on line to 20, Fig. 1,also on an enlarged scale; and Fig. 4 is a detail inside elevationshowing a modified arrangement of some of the parts.

I propose to employ the vertical shaft (1, instead of the rope commonlyused for working the regulating-valve of the hydraulic apparatus, fromthe cart, by the conductor, said shaft being suspended from the top ofthe elevatorway by any approved means and extending down to thehydraulic apparatus and connected in my approved way with thecontrolling-valve; but this connection I do not represent in thedrawings, as it forms no part of the invention to be claimed herein. Inthis case I have represented said shaft as sus pended on anti-frictionballs 0 under the bevel-wheel (Z at the top, or it may be bythe yoke eand pivot f. It is thus suspended in preference to supporting it by astep at the bottom, because it would in such case spring and wabble,owing to its great length andsmall size, or would have to be stayedlater ally by bearings contrived to shift away from the shaft to allowthe car to pass and return again, which it is highly desirable to avoid,because such bearings must of necessity be rather complicated andexpensive, besides not being very reliable. Such lateral bearingstaysmay be and have been employed in an arrangement of them in such smallsize and applied to such small journals of the shaft as to enable awrench-shaped lever device on the car for turning the shaft to slidepast the bearings; but the shaft has to be larger in such arrangementthan is required in my plan, in order that the journals shall havesufficient size for torsional strength. Said shaft is geared with theconductors hand-lever g, pivot-ed to the inside of the car by thebeveLpinions h i, the former being carried along the shaft in thebracket j, attached to the side of the car, and the latter beingattached to the leverpivot. The lever has a pointer 75, which traversesan indicator-scale 1, showing the direc tions for working the carriageup or down. The shaft is angular in cross-section, and the hole in thepinion h is the same for allowing the pinion to shift freely along theshaft, and at the same time enabling the pinion to turn the shaft asdesired. This means of working the controlling-Valve is consideredadvantageous as compared with the rope commonly used, because it iseasier for the conductor to work the lever than to pull the rope up anddown; but the chief purpose of the shaft is to provide for coupling withother working-levers m in the different stories of the build ing, sothat a person on any one of the floors it may have command of the car tobring it to his service without the aid of a conductor. To this end Iprovide another shaft 0, extend ing along the elevator-way and-supportedin bearings 19 at suitable intervals and coupled in any approved waywith said levers, as by the connectingrod qand crank s or the toothedrack t and pinion u, for shifting it by them,

said shaft being geared at the top, as by the bevel-pinions (Z (1', spur-gears c, or other means for transmitting the motion from the leversmindividually to the controlling valve. This shaft is also representedas suspended in like manner as the other; butas it is stayed atintorvals by the bearings 19 it may, if desired, rest on a step at thebottom. Thus the car is alike subject to the control of persons on thedifferent floors as well as in the car, and thus may be practicallyuseful to all the occupants of a building without the expense of aspecial conductor; but the arrangement has also another advantage inaffording a means of automatically locking the valve-operating shaftwhen the door of the elevatorway opens and keeping it locked while thedoor remains open for safety to unskilled persons using the elevator.This is accomplished by providing a notch 10 in the con necting-rod q orrack-bar t and a latch .1 pivoted to the wall in such relation to eachother that when the working-levers stand on the center position and theelevator is stopped said latch will swing into the notch and providingthe inclined flange (1 on the door 12 in such relation to the latch thatwhen the door opens it will shift the latch and engage it with thenotch, and thus lock the valve-working gear and effectually preventstarting the elevator while the door is open, and thus insures theclosing of the door.

The closing of the door releases the latch f rom-the control of theflange and allows the latch to return to the normal position by theoverbalancing gravity of the arm acted on by the flange, or it may be aspring, and thus prevents the shifting of the valve-shaft to start theelevator again. The latch has an anti-friction roller a to roll on theflange for easy action.

Although I have represented the shaft a as arranged in the space betweenthe car and "the Wall of the elevator-way, which is the arrangement thatI prefer, I may of course have it extended through the car as the ropeof the common arrangement does, and I do not limit myself to thearrangement shown.-

I am aware that it is not a new device broadly to provide anti-frictionbearings to sustain lengthwise thrusts on a shaft, as in the case of thescrew-shaft of a baling-press, subject to excessive thrust lengthwise,and I do not claim such arrangement. My purpose is to combine suchdevice with the vertical valve-controlling shaft and appliancesconnecting the same with the car of an elevator, where such shaft mustof necessity be too long and slender to keep its alignment withoutintermediate bearings if supported in a step and where such bearings areimpracticable. lVhat I claim, and ters Patent, is

1. The combination, with the elevator-car, ofthe shaft for working thecontrolling-valve suspended in the elevator-way from an antifrictionsupport at the upper end and independently of intermediate bearingsalong the elevator-way, the working-lever pivoted to the inside of thecar, and the bevel-wheels mounted on the car and gearing said lever andshaft together, one of said wheels sliding along the shaft,substantially as described.

2. The combination, with the elevator-car, of the, shaft for working thecontrolling-valve suspended in the elevator-way and geared with theconductors wor ting-lever in said car, the intermediate shaft alsoarranged in the elevator-way and geared with the valveworking shaft, anda workinglever in each stor geared with said intermediate shaft andthrough it with the valve-controlling shaft, substantially as described.

3. The combinatiomwith the working-lever mechanism for shifting thevalve-controlling rod, of the safety-stop consisting of the notched rodor bar connecting the workinglever with the intermediate shaft ithestoplatch,'and the inclined flange, on .the door of the elevator-way,said stop-latch being automatically detachable from the notched bar whenthe door is closed, substantially as described.

In testimony that I claim the foregoing as myinvention I have signed myname, in presence of two witnesses, this 20th day of March, 1890.

desire to secure by Let- AUGUST SUND II. W'itnesses:

W. J. MORGAN, ERNST LUNDGREN.

